package com.wench.lock;

import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

//  第一步 创建资源类
class ShareResource {

    //  定义标识位
    //  1 for AA    2 for BB    3 for CC
    private int flag = 1;

    //  创建Lock锁
    private Lock lock = new ReentrantLock();

    //  创建三个condition
    private Condition c1 = lock.newCondition();
    private Condition c2 = lock.newCondition();
    private Condition c3 = lock.newCondition();

    public void print5(int loop) throws InterruptedException {

        lock.lock();

        try {
            while (flag != 1) {
                c1.await();
            }
            for (int i = 1; i <= 5; i++) {
                System.out.println(Thread.currentThread().getName() + " --- " + i + " --- 轮数：" + loop);
            }
            flag = 2;
            c2.signal();
        } finally {
            lock.unlock();
        }
    }

    public void print10(int loop) throws InterruptedException {

        lock.lock();
        try {
            while (flag != 2) {
                c2.await();
            }
            for (int i = 1; i <= 10; i++) {
                System.out.println(Thread.currentThread().getName() + " --- " + i + " --- 轮数：" + loop);
            }
            flag = 3;
            c3.signal();
        } finally {
            lock.unlock();
        }
    }

    public void print15(int loop) throws InterruptedException {

        lock.lock();
        try {
            while (flag != 3) {
                c3.await();
            }
            for (int i = 1; i <= 15; i++) {
                System.out.println(Thread.currentThread().getName() + " --- " + i + " --- 轮数：" + loop);
            }
            flag = 1;
            c1.signal();
        } finally {
            lock.unlock();
        }
    }
}

public class ThreadDemo3 {

    public static void main(String[] args) {

        ShareResource shareResource = new ShareResource();
        new Thread(() -> {
            for (int i = 1; i <= 10; i++) {
                try {
                    shareResource.print5(i);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }, "AA").start();

        new Thread(() -> {
            for (int i = 1; i <= 10; i++) {
                try {
                    shareResource.print10(i);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }, "BB").start();

        new Thread(() -> {
            for (int i = 1; i <= 10; i++) {
                try {
                    shareResource.print15(i);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }, "CC").start();
    }
}







